Adjustable seat-back support for reversible car-seat backs.



R. L. MANGAN.

ADJUSTABLE SEAT BAOK SUPPORT FOR REVERSIBLE CAR SEAT BACKS.

APPLICATION FILED NOV. 19.1908.

922,303, I Patented May1s,1909.

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ROBERT L. MANGAN, OF

SPRINGFIELD, MISSOURI.

ADJUSTABLE SEAT-BACK SUPPGHLL FOR REVERSIBLE CAR-SEAT BACKS.

Application filed November 19, 1908.

To all whom it may concern:

Be it known that I, ROBERT L. MANGAN, a citizen of the United States,residing at Springfield, in the county of Greene and State of Missouri,have invented certain new and useful Improvements in AdjustableSeat-Back Supports for Reversible Car-Seat Backs, of which the followingis a specification, reference being had to the accompanying drawings.

This invention relates to improvements in reversible backs for car seatsand more particularly to the one set forth in Patent No. 829,078 grantedto me August 21, 1906.

The object of the present invention is to improve and simplify the meansfor attaching the seat back to its supporting arms and thereby renderdevices of this character less expensive and more durable and efficient.

F-Tith the above and other objects in view, the invention consists ofthe novel features of construction and the combination and arrangementof parts hereinafter fully described and claimed, and illustrated in theaccompanying drawings, in which Figure 1 is a side elevation of a carseat and its reversible back showing the invention applied thereto; Fig.2 is a detail section taken on the plane indicated by the line 66 inFig. 1; Fig. 3 is a detail section taken on the plane indicated by theline 7 7 in Fig. 1 and Fig. 4 is a detail perspective view of the armattaching plate shown in Fig. 1 and showing a snap spring attachedthereto.

In the drawings, 1 denotes the seat, 2 the seat back, 3 and 4 thesupporting arms pivoted at their lower ends upon the ends of the seatadjacent its corners and having their upper ends pivoted to my improvedattaching plate 6 This plate is formed upon its inner face adjacent itsends with in tegral studs or pins 8 which enter flanged metal sleeves 9formed in sockets or openings 10 in the end rail 7 of the seat back 2.Formed upon the outer faces of the arm attaching plate 6 at the ends ofthe latter, are circular bosses 12 from which project reduced pivotstuds 13 and from which latter in turn project reduced stems 14. Thepivots 18 are adapted to project through openings in the Specificationof Letters Patent.

Fatented May 18, 1909.

Serial No. 463,434.

' ends of the back supporting arms 3 P, and the latter are retained onsaid pivots by washers 15 arranged upon the reduced eX- tremities orstems 14 of said pivots and in turn retained upon said stems byupsetting the latter, as clearly shown in Fig. 2 of the drawings. Thebosses 12 on the outer face of the plate 6 are provided for the purposeof serving as stop shoulders for the engagement of the back supportingarms, as shown in Fig. 1, and they are preferably formed concentric withthe retaining pins or studs S" upon the inner face of said plate.

j For the purpose of effectively retaining the arm attaching plate 6upon the end rail 7 of the seat back and also permitting it to bereadily disconnected and removed, a snap spring 16 is preferablyprovided. This spring is in the form of an angular plate of resilientmetal secured upon its broad end, as shown at 17, to one edge of theplate 6 and adapted to extend around one edge of the rail 7 and to havea lip or projection 18 stamped from its small end, engage the inner sideface of the rail 7 and thereby retain the plate 6* upon the outer faceof said rail and the pins 8" in the sockets or openings in said rail.When the small end of the snap spring 16 is sprung to disengage its lip18 from the rail 7, the plate 6 may be removed from said rail, as willbe readily understood upon reference to Fig. 3 of the drawings.

The rail 7 of the seat back is preferably constructed of wood and inorder to strengthen it and prevent it from splitting at points where thesockets or openings 10, 10 are formed, bolts 19 are passed through saidrail on opposite sides of the socket, as clearly shown in the drawings.

From the foregoing it will be seen that the provision of the sockets orseats in the end rail of the seat back and the provision of pins orstuds on the arm attaching plate, for the purpose of engaging saidsockets or seats, insures an effective connection between the plate andrail and one which will be simple and inexpensive.

Having thus described the invention what is claimed is:

In a device of the character described, the

combination with a car seat and a back havand formed at its free endwith a lip to take ing an end rail formed with sockets or openover oneedge of said raiL v 7 7 l0 ings, back supporting arms, an arm attach- Intestimony whereof I hereunto afiix my ing plate to which said arms arepivoted; signature in the presence of two witnesses.

said plate being formed with pins to enter ROBERT L. MANGAN.

said sockets in the end rail of the back, and Witnesses:

an angular spring secured to the central por- JEROME OHARA,

tion of said plate to extend around said rail LUCIAN OHARA.

